[PATCH v2 0/8] MR1979: msvcrt: Remaining implementations and stubs for cm3

[Torge Matthies (＠tmatthies)]

Based on !2524.

This adds the remaining stubs needed for Crazy Machines 3 to work and decode preview images correctly in online mode.

--
  v2: msvcr110: Add _Context::_IsSynchronouslyBlocked stub.
      msvcr110: Add _Cancellation_beacon::_Cancellation_beacon_dtor stub.
      msvcr110: Add _Cancellation_beacon::_Cancellation_beacon_ctor stub.
      msvcr100: Implement _StructuredTaskCollection::_IsCanceling.
      msvcr100: Implement _StructuredTaskCollection canceling.
      msvcr100: Use enum for _StructuredTaskCollection status bits.
      msvcr100: Use enum for _StructuredTaskCollection return value.
      msvcr100: Only wake task collection waiters when finished >= count.
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/1979